The Wittig reaction in the generation of organometallic compounds containing alkenes as side groups

Article abstract of DOI:10.1016/0022-328X(92)83487-3

The Wittig reaction has been identified as a viable route to transition metal monomers.It has been used to synthesize (η⁵-C5>Mn(CO)3 from acetylcymantrene and the appropriate phosphorane at room temperature. <η⁵-C5H4>(η⁵-C5H5)Fe 5-C5(CH=CRR')H4>(η⁵-C5H5)Fe have been produced from formylferrocene and phosphorane in refluxing benzene.E/Z isomeric ratios were identified for alkenylcymantrenes and are consistent with past Wittig studies.The aldol reaction has been identified as a side route in the Wittig reactions of acetylferrocene and phosphoranes.Carbomethoxyphosphoranes did not produce alkenes at room temperature with nonpolar solvents.